Ryan Dunn

He's standing by his message, but Roger Ebert admits he may have said it too soon.

Following a Tweet implying that the death of daredevil Ryan Dunn was linked to drunk driving – "Friends don't let jackasses drink and drive," the film critic said – Ebert is offering his apologies to Dunn's fans, family and friends, including Dunn's Jackass costar Bam Margera.

"I have no way of knowing if Ryan Dunn was drunk at the time of his death," Ebert, 69, writes on his Chicago Sun-Times blog. "I don't know what happened in this case, and I was probably too quick to Tweet."